The first device for the Firefox OS tablet program has these specs:

Brand/Model: InFocus New tab F1, Wi-Fi
Processor: A31 (ARM Cortex A7) Quad-Core 1.0GHz w/ PowerVR SGX544MP2 GPU
Memory: 2GB DDR3
Hard Disk: 16GB Flash
Screen: 10.1 IPS capacitive multi-touch @ 1280x800
Camera: Dual cameras, 2MP/5MP
Wireless Network: 802.11b/g/n
Ports: Micro SD, Micro USB, headphone
Other: GPS, Bluetooth, Gyroscope
Battery:7000mAh

And its dimensions are:

If you missed it, here’s a photo of the tablet running the latest nightly build of Firefox OS.

http://asadotzler.com/2014/01/16/firefox-os-tablet-program-first-device-specs/